Abstract
Fluopicolide, a relatively new fungicide is used for control of downy mildew of grape. Persistence study of fluopicolide was carried out on grape berries following treatment of the combination product, fluopicolide 4.44% + fosetyl aluminium 66.7% (Profiler 71.14 WG) at the recommended and double the recommended dose of 2.5 and 5.0 kg ha−1. Four treatment sprays were given at 15 day intervals, starting from 1 month after pruning of the vines. Residues of fluopicolide in grape berries were estimated on 0 (1 h), 1, 3, 5, 7, 10, 15, 20, 25, 30 day and at harvest (64 days after the last spray application). The initial residue deposits of fluopicolide on grape berries were 0.58 and 1.32 mg kg−1 from treatment at the recommended and double dose, respectively. Dissipation of fluopicolide residues was a slow process. After 30 days of treatment, 0.068 and 0.204 mg kg−1 of residues still remained in the berries from treatment at the recommended and double dose, respectively. Fluopicolide residues in grape berries dissipated with the half-life of 10.2 and 12.3 days. Residues in grape berries and soil at harvest were below the quantifiable limit of 0.01 mg kg−1 from both the treatments.
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Acknowledgments
The authors thank Director, IIHR Bangalore for providing the facilities to carry out this study and ICAR, New Delhi for sponsoring the study.
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Mohapatra, S., Ahuja, A.K., Deepa, M. et al. Persistence and Dissipation of Fluopicolide in/on Grape Berries and Soil Under Semi Arid Tropical Climatic Conditions of India. Bull Environ Contam Toxicol 86, 238–241 (2011). https://doi.org/10.1007/s00128-011-0193-3
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DOI: https://doi.org/10.1007/s00128-011-0193-3